mirror of https://github.com/mongodb/mongo
66 lines
2.6 KiB
JavaScript
66 lines
2.6 KiB
JavaScript
/**
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* Test to ensure that a primary does not erroneously commit a two phase collection drop if it
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* steps down and back up again before the drop has been committed.
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*
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* Test steps:
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*
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* 1. Pause oplog application on secondary.
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* 2. Drop collection 'collToDrop' on the primary.
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* 3. Force primary to step down.
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* 4. Wait for primary to step up again.
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* 5. Make sure that collection 'collToDrop' has not been physically dropped on the primary.
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* 6. Resume oplog application on secondary and make sure collection drop is eventually committed.
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*/
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import {TwoPhaseDropCollectionTest} from "jstests/replsets/libs/two_phase_drops.js";
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// Set up a two phase drop test.
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let testName = "drop_collection_two_phase_step_down";
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let dbName = testName;
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let collName = "collToDrop";
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let twoPhaseDropTest = new TwoPhaseDropCollectionTest(testName, dbName);
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// Initialize replica set.
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let replTest = twoPhaseDropTest.initReplSet();
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// Check for 'system.drop' two phase drop support.
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if (!twoPhaseDropTest.supportsDropPendingNamespaces()) {
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jsTestLog('Drop pending namespaces not supported by storage engine. Skipping test.');
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twoPhaseDropTest.stop();
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quit();
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}
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// Create the collection that will be dropped.
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twoPhaseDropTest.createCollection(collName);
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// PREPARE collection drop.
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twoPhaseDropTest.prepareDropCollection(collName);
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// Step primary down using {force: true} and wait for the same node to become primary again.
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// We use {force: true} because the current secondary has oplog application disabled and will
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// not be able to take over as primary.
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try {
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const primary = replTest.getPrimary();
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const primaryId = replTest.getNodeId(primary);
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// Force step down primary.
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jsTestLog('Stepping down primary ' + primary.host + ' with {force: true}.');
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// The amount of time the node has to wait before becoming primary again.
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const stepDownSecs = 1;
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assert.commandWorked(primary.adminCommand({replSetStepDown: stepDownSecs, force: true}));
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// Wait for the node that stepped down to regain PRIMARY status.
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jsTestLog('Waiting for node ' + primary.host + ' to become primary again');
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assert.eq(replTest.nodes[primaryId], replTest.getPrimary());
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jsTestLog('Node ' + primary.host + ' is now PRIMARY again. Checking if drop-pending' +
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' collection still exists.');
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assert(twoPhaseDropTest.collectionIsPendingDrop(collName),
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'After stepping down and back up again, the primary ' + primary.host +
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' removed drop-pending collection unexpectedly');
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// COMMIT collection drop.
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twoPhaseDropTest.commitDropCollection(collName);
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} finally {
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twoPhaseDropTest.stop();
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} |